Improvement in lumber-measures



F. S. BALDWIN. Lumber Measures.

UNITED STATES PATENT OFFICE.

FRANK S. BALDWIN, OF ST. LOUIS, MISSOURI.

IMPROVENIENT IN LUMBER-MEASURES.

-Speoifioation forming Part of Letters Patent N0. 138,310, datec'l April29, 1873; application filed November 16,1872.

T0 all whom it mag; concern:

Be it known that: I, FRANK S. BALDWIN, of St. Louis, in the eounty ofSt. Louis und. Stute of Missouri, have invehted a. new and Improved linew 00 of Fig'. 2. Fig. 4 is a. detail.

Similar letters of reference indicate corresponding parts.

A rep1esents a. small eiroular sheet-metal case, with a reel, B, insideof it 011 the axis O, with a tape-measure, D, coiled 011 its face, aooiled. spring, E, upon one side for winding up the tapemeasure, and a.disk, F, on the other side for transmittiug its motion 130 re'-cording-dials, when the tape is pulled out und stretohed along the pieceto be measured. This disk has ratehet-teeth in the periphery, and isengaged by a spring-pawl, G, on the Whirl B, which runs back 011 thedisk when the spring winds up the tape, a.nd engages and turns it whenthe tape is pulled out. H representsa cone of differentia.l gea.rsattaohed to this disk for transmitting the motion to the reoordingdials,of which there are in this example four sets, I, in whioh a is for theunits, b the tens, und. so on. These dials are arranged immedia.telyunder the platze of the ca-se, as shown ab L in Fig. 1, through whiohthere is a hole, M, for tl1e inspeetion of euch, und they are gearedtogether by a. train of wheels, N and. N, with pins und teeth arrangedin the ordinary way for aotuating recording trains. The wheel N isoonneoted with any one of the wheels of the cone H by the 1011 g pinion0 and the short one P, the latter being mounted loosely on the inner endof a. strong shaft, Q, projeoting into ehe case from a. short tobe, R,whioh has a disk, S, on its inner end, just in side of the plate of thecase, and extends Outside through the curved slot T into another tobe,U, having a disk, V, 011 its inner encl against the plate of the disk,and a. thumbpiece, W, ab the outer end by which to turn it; and it isconnected. by a pin, x, with the tobe R, so as to turn it, and this tubeR has aslot, Y, in whioh a. pin, Z, of the shaft Q projects, so thatseid. shaft is ca.used to slide out and in endwise loy the turning ofthe tube U to bring the piuion P into the plane of any one of the wheelsof the 00110 H, am]. the shaft Q asses through a. radius-loar, e, whiehis pivoted on the axis of wheel O, so that in swinging the pinion Ptoward. und. from the axis of the oone H, as required, for gearing withthe wheels of different sizes, Which is done by shifting ehe tubes R Uand. the shaft Q a.long the slot T, the seid. pinion will be kept: ingea.r with the long pinion O, whiohtransmits the motion of thereeording-train. These differential wheels a.re gradu-ated to aetuatethe recording-train correotly for several diflerent lengthsoflumloer-say the smallest one will beof the right size for turnin g thereoordingdials so a-s 110 indicate correctly ehe measure of lumber ofte11 feet in length, the next one similarly for twelve-feet lumber, andso on. Ab the same time tha.t the pinion P am]. its sha.ft are shift-edfrom one of tl1e oone-wheels to another it must be seeured also inoonnection with ehe seid wheels, so as not 150 slip out of gear, forwhich the disk V is provided with .as many angle-slots f g h, &o., asthere are wheels in the cone H, 110 engage With a. stand pin, k, risingup from the case, whioh slots are graduated, in respect of their radialdepth, 120 the differeut: wheels, and they are also zu. rangedeiroumferentially relatively 130 the spiral slot in the tube R, so tha.twhen any notoh is engaged. with the pin k, as shown a1; f, the pinionwill not only be adjusted to the plane of the wheel of the oone forwhioh the noteh is adjusted, bul: it will also be brought into gear withthe sa.id wheel. II: is, therefore,

only neoessary 1:0 turn the thumb-pieoe W,-

and shift it in the slot T properly for engaging any partioular slotWith tl1e pin for ohanging the conneotion 0f ohe train ofreeordingdisksfor setting the maohine for the length of the lumber to bemeasured. The wheel N will be adjusted to tl1e required osition forbeginning the work loy the disk F when 1bhe tape is wound up, but theother wheels of Il7ll6 reoordingtrains will loe a.djusted by a keyapplied through holes in the sido platze of the ease to the axles 0f ehewheels, as represent'ed at l, Fig. l. The wheelsof the recording-trainareprevente. from turning, except when required, by springs m.

T0 change the transmiting-gears 0 P from one recording-train 150another, they eure arranged. 011 a disk, n, Whi0h turns within the otherportion of the top plate of the case on the axis 0 to swing them aroundfrom one set to another; and in order 130 pr6vent the trains from beingdisturbed 01 changed when this shifting takes place, by the unit wheelsi being turned by the pinion O, either when passing 0ut 0f 01 into gearwith them, a levercatch, p, is provided for each train f0r being thr0wninto gear with the whee1 N by a tappet, q, on the disk S, .and he1d ingear with it by the disk n, as long as the notch 1' in ehe edge does notcoincide with the end 0f the 1ever, whieh is always the oase when thetransmitting-gears are not in eonnection with the recording-train t0which the lever belongs; but when they are so a spring, t, throws thelever int0 the notch r, disengaging the wheel N, and locking tl1e diskn. The train being thus held by the1ever p, the wheels 0 P Will turnsufficiently f01 engaging or disengaging with the whee1 N.

The shafts 0f the recording-train are journaled ab one end in a ring, A,arranged in fr0 nt of the diskF for their upport, and ab the other endthey are journa-led in the plate 0f the case. The ring will be supported011 rods or posts of any kind projecting from the same plate in whiohthe ax1es of t-be trai-nsare supported.

Havingt' thus deseribed my invenoion, I clain1 as new and desire t0secure by Letters Patentl. Two 01 more trains 0f a registeringinstrumentin one mzwhine, with gears for counecting them with the tapemeasurereal, ar ranged 1:0 shift the connectiou from one reeording-train 1:0the other, substantially in the manner described.

2. The combinat-ion of the differential cone H, pinionl, shafl: Q, tubesR and U, radial plate e, and pini0n O, substantially as specified.

3. The combination, With the disk n and recording-trains I, of thestop-lever p and the tappet q 0n the disk S, substantially as specified.

4. The combination 0f the disk V with graduated slots, as described,with the shifting devices for the pinion P, and a stop-pin, K,substantially as speci fied.

Witnesses: FRANK S. BALDWIN.

O. SEDGWIGK,

T. B. M0SHER.

